[R] Simple rep() question duplicating times and dates.

John Kane jrkrideau at yahoo.ca
Wed Nov 5 16:30:31 CET 2008


I don't have R on this machine to try it but it looks good to me.  I had even got as far as seq() but completely missed the use of "each".  

Thanks very much.

--- On Wed, 11/5/08, Gustaf Rydevik <gustaf.rydevik at gmail.com> wrote:

> From: Gustaf Rydevik <gustaf.rydevik at gmail.com>
> Subject: Re: [R] Simple rep() question duplicating times and dates.
> To: jrkrideau at yahoo.ca
> Cc: "R R-help" <r-help at stat.math.ethz.ch>
> Received: Wednesday, November 5, 2008, 10:14 AM
> On Wed, Nov 5, 2008 at 4:02 PM, John Kane
> <jrkrideau at yahoo.ca> wrote:
> >
> > I want to create a data.frame of time and date for a
> year.  I started with the idea of simply producing two
> vectors (time and date)
> >
> > The first part ( time) is easy.
> >  rep(1:24, 365)
> >
> > But how do I get a series of 24 dates for O1 January
> 2005 and repeat this to 31 December 2005.
> >
> > It should be easy but I don't see it.
> >
> > Thanks
> 
> 
> Hi John,
> 
> ?Date leads you to (among other things) ?seq.Date.
> 
> Something like this should work:
> 
> time<-rep(1:24, 365)
> dates<-seq(as.Date("01012005",format="%d%m%Y"),as.Date("31122005",format="%d%m%Y"),by=1)
> TimeFrame<-data.frame(time)
> TimeFrame$dates<-rep(dates,each=24)
> 
> 
> Regards,
> Gustaf
> -- 
> Gustaf Rydevik, M.Sci.
> tel: +46(0)703 051 451
> address:Essingetorget 40,112 66 Stockholm, SE
> skype:gustaf_rydevik



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